Merge branch '432132-migrate-project-tempates-to-alert' into 'master'

Migrate deprecated bs-callout to alert component in project templates

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/144993



Merged-by: Anna Vovchenko <avovchenko@gitlab.com>
Approved-by: Sascha Eggenberger <seggenberger@gitlab.com>
Approved-by: Anna Vovchenko <avovchenko@gitlab.com>
Approved-by: Sharmad Nachnolkar <snachnolkar@gitlab.com>
Co-authored-by: Taras Taday <ttaday@softserveinc.com>